What was found
THE NR 4 HYDRAULIC SYSTEM LOSS OF PRESSURE AND FLUID. QUANTITY AND PRESSURE FLUCTUATIONS DUE TO FAULTY HYDIM CARD. CARD REPLACED. AIRCRAFT HAS HAD NO FURTHER HYDRAULIC INDICATION PROBLEMS FOR LAST 8 FLIGHTS.
- Difficulty date
- July 22, 2004
- Submitted
- August 3, 2004
- Operation
- Air carrier
- Aircraft
- N193UA
- Make and model
- Boeing 747422
- Aircraft serial
- 26890
- Aircraft time
- 33,125 hours, 4,089 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 2930 · Hydraulic Indicating System
- Part
- Circuit Card
- Part number
- 285U0032
- Part serial
- D01423
- Condition
- Malfunctioned
- Location
- Hyd Indicator
- Stage of operation
- CL
- How discovered
- O
- Nature of condition
- N
- Precautionary procedure
- H, A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.